Respirator mask face seal



FIG. 1 is a left front perspective view of a respirator mask face seal showing the new design, the face seal shown attached to a respirator mask;

FIG. 2 is a front plan view thereof;

FIG. 3 is a front view of the respirator mask;

FIG. 4 is a top plan view of FIG. 1;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a left side view thereof, the right side being a mirror image of this view.

The dash-dot-dash broken line separating the upper portion and the lower portion of the respirator mask face seal represents the bounds of the claimed design and forms no part thereof. The broken line showing of the respirator mask illustrates the environment and forms no part of the claimed design. All other broken lines in the drawings illustrate portions of the respirator mask face seal that form no part of the claimed design. 

CLAIM The ornamental design for a respirator mask face seal, as shown and described. 